## Chapter 9 – Trigonometric Ratios of Multiple and Submultiple Angles Exercise Ex. 9.1

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Question 24

Prove that

Solution 24

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Solution 50

## Chapter 9 – Trigonometric Ratios of Multiple and Submultiple Angles Exercise Ex. 9.2

Question 1

Solution 1

Question 2

Solution 2

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Solution 3

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Solution 4

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Solution 11

## Chapter 9 – Trigonometric Ratios of Multiple and Submultiple Angles Exercise Ex. 9.3

Question 1

Solution 1

Question 2

Solution 2

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Solution 3

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## Chapter 9 – Trigonometric Ratios of Multiple and Submultiple Angles Exercise Ex. 9VSAQ

Question 1

Solution 1

Question 2

Solution 2

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Solution 3

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Solution 4

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Solution 5

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Question 9

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Question 12

If sin x + cos x = a, find the value of sin^{6 }x + cos^{6 }x.

Solution 12

Question 13

If sin x + cos x = a, find the value of |sin x – cos x|.

Solution 13